2005 Nissan X-Trail SE

For those who aren't familiar with it, the X-Trail is the Xterra's little brother in the Canadian market, and pretty popular in other countries as well. It's got plenty of room under the passenger seat, so I chose to mount most components there.

Issues

Well, the project was technically finished and working, but a few issues have arisen:

The Xenarc 700IDT touch screen is impossible to calibrate correctly, and the H-Position is flakey on the LCD. I've requested and RMA from Xenarc: to do so, I had to pull the unit from the dash to get the S/N. It'll stay out until I ship it to them and they hopefully fix or replace it.

An earlier problem with the Xenarc 700IDT that I fixed myself was the LCD hinge screws coming loose and being catapulted into an unknown location by the spring-loaded hinge when I deployed the monitor. I found one of the screws fairly quickly, but it took several hours of searching with a flashlight and a magnet before I found the second one, which had fallen through a hole in the carpet where a heating duct comes through.

Having the computer power on when I hit the power door unlock is turning out to be a pain in the *** since the Carnetix P1290 doesn't have any kind of timeout if the accessory power doesn't come on after turning on the computer. Basically, if I go out to the car to get my sunglasses, I have to stick around for 30 seconds so I can send a shutdown signal to the computer, or it'll stay on indefinitely. I'm considering just disconnecting that lead.

My battery went dead the other day and I had to boost it to get to the office. I suspect it had something to do with the point above, and the Carnetix P1290 didn't cut power to the computer before the voltage dropped too low to start the engine. The X-Trail's got an interior dome light timeout, so I'm fairly sure the computer killed my battery.

There's a WICKED buzz in the audio that corresponds to engine RPM. Experimenting with various grounding schemes didn't yield results, so I bought a ground loop isolator and enough cable to route the audio line on a path apart from the other cables. That'll all go in when I re-install the display.

Well, the project was technically finished and working, but a few issues have arisen:

The Xenarc 700IDT touch screen is impossible to calibrate correctly, and the H-Position is flakey on the LCD. I've requested and RMA from Xenarc: to do so, I had to pull the unit from the dash to get the S/N. It'll stay out until I ship it to them and they hopefully fix or replace it.

An earlier problem with the Xenarc 700IDT that I fixed myself was the LCD hinge screws coming loose and being catapulted into an unknown location by the spring-loaded hinge when I deployed the monitor. I found one of the screws fairly quickly, but it took several hours of searching with a flashlight and a magnet before I found the second one, which had fallen through a hole in the carpet where a heating duct comes through.

First off, I love the clean install. You are SOOOOO lucky. You have 2 separate DIN locations as well as enough room under your seat to fit the whole setup.

Yes, your buzzing noise is what is known as alternator noise. You have to isolate your power and RCA cables to opposite sides of the car as well as find a CLEAN grounding location. The ground should be directly to the body of the car and if there is paint on that grounding location, grind it off with sandpaper.

Also, I had the 700IDT and recently sold it to another member here on the forums. I had the same exact problems you describe:
1.) Don't follow the resolution settings on Xenarc's website. I had a special problem with mine where the lower portion of the picture would show up on the top in Windows. The Xenarc techs finally figured it out that the resolution settings on the Xenarc webpage needed modification to work with my unit. I don't have the unit anymore and all I could remember was that one of the settings had to change from I think a 38 to 40. That fixed everything.

2.) Screws loose...I went through 3 of these units and the second unit had this problem as well. I had send it in for an RMA. The replacement was rock solid compared to the prior 2.